docs: def class_wise_f_measure(self, event_label):
          """Class-wise f-measure metrics (f_measure, precision, and recall)
  
          Returns
          -------
          dict
              results in a dictionary format
  
          """
          if self.class_wise[event_label]['Nsys'] == 0 and self.empty_system_output_handling == 'zero_score':
              precision = 0
  
          else:
              precision = metric.precision(
                  Ntp=self.class_wise[event_label]['Ntp'],
                  Nsys=self.class_wise[event_label]['Nsys']
              )
  
          recall = metric.recall(
              Ntp=self.class_wise[event_label]['Ntp'],
              Nref=self.class_wise[event_label]['Nref']
          )
  
          f_measure = metric.f_measure(
              precision=precision,
              recall=recall
          )
  
          return {
              'f_measure': f_measure,
              'precision': precision,
              'recall': recall
          }